create table time_exp ( date_time date );
insert into time_exp ( date_time ) values ( sysdate );
select to_char(date_time,'DD-MM-YYYY, HH24:MI:SS')
from time_exp;
Dates are always stored with a time element but just selecting the date will only display the date, if you want the time then you have to provide a 'format template' when selecting the date.
Hope this helps
JJ